Emergency exit-door lock.



I No. 824,173.

, Y a I .PATENTED JUNE 26,- 1906.]

- EMERGENCY EXIT noon LOCK.

APPLICATION TILED D30. 9, 1905.

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e v [y UNITED sures PATENT oFFio l J HUG ,ELMER-OLARBF,'ROLIIFIFSTER,NEW YORK." V

,EMERGENQY Exit-noon Loo i 4 Specification of Letters Patent. I IApplication-filed December 9,1905 Seria1 No. 291,1 62.

:Patented June 26, 1906.

To all whom, it may concern): Be it knownthat I, HUGH ELMER CLARK, a.citizen of the United States, and a resident of Rochester, in the countyof Monroe and State ew York, have invented certainfn ew and usefulImprovements in Emergency 'EXit- Door Locks, of which'the following is aspecification. 1

emergency exit-door locks.

Th1s, 1nvent1on is an 1m .My invent on relates to lmprovements1nrovement u on that setforth and describe :in Letters atent of: theUnited States No. 805,411 ,"issued to moon the21st day of November,1905,

and is intended to adapt that invention to certain conditions not beforeconsidered.

In thedrawings, Figure 1 isa front elevation ofdouble doors embodyingthis invention. 2 is a verticals'ec tion on the line 2 2'ofFig. 1.. Fig.3 is a persective view of certain details, and Fig. 4 shows in therelatlon of two ofthe parts another detail of con struction.

Dou'ble doors X and X are shown, which are hinged to the-casing in theusual manner,

' so'that they swing outwardly? Brackets 1 1 vers 6 6 are pivote areattached to said doors'yrespectively, to

whichthe hinged plates 22 are attached, respectively. plate 3 isals'oattachedto one of said doors, as X, which'carriesthe bracket 4 (see Fig.2)and the-two airs otlugs' 5 5 and 5 5.. (See 3.)] eV crating-lebetween;the ugs 5 and 5 5,';respectivel The plate 4 has a horizon tal slot 7 andt e'levers 66 vertical slots 8 8, respectively. Rods 9 and 10 are ontheends of the plates 2 '2, respectively. One of these rods 9 asses throughall three of said slots of the fulcrums of sai 7, 8, an 8 and whenclosed its free end 11 enters a socket 12 on the end of the other rod10. Locking-bolts 1 313 are pivoted to the levers 6 6, respectivel onthe opposite side (l evers from, their slots 8 S'by yokes 14 14. Thelocking-bolts run through guides 15 1-5 on the door X and en- 4 gagesocket-plates 16 16, which may be in the top and bottom of thedoor-casing or in any ot er suitable place.- A latch 17, that is'pivanysuitable pointad jacent to the rod 9, '(in the drawings it is shownivoted to the side of the plate 1,-)- car-'- rice as loulder 18 that isadaptedto engage a'lug 20 upon said rod 9. j

Normal the parts take the ositions shown in igs. 1 to 3, in which the r0'9 lies in tively, and 100 the doorshut. When pres- 13 and unlockingthe. door X, so that both tac ed to the outside of the door X) preventsother door X isvalso opened, and a horizon tally-slotted bracket 21' isshown for sup 'ortin at its outer end the plate 2 on the door byreceiving-the rod 10. When the rod- 9- is forcedinwardly to retract thebolts 1313, its lug20 is engaged by theshoulder 1S leased from thelatch, so thatthe bolts can not come into contact with the casing to marit or to' prevent the doo from being closed.-

The socket 12 on 1th rod 10 is represented in Fig. 1 as open on itsbuterside; but in Fi 4 another form of socket 22 is shown, whic 1 is onlyopento receive the rod 9 at its end 23. When the socket shown in Fig. 4 isused, both doors are closed'at the same time, so that the rod -9 willenter the socket 21. WhatIclaimis Y I 4 1. In an automatic door-lock, adoor; a horizontallymovable part, hinged to. the door;' a guide-plate onsaid door, having a horizontal'slot for the-free end of saidhorizontally-movable art; an o crating-lever pivotally supported uponsaid cor, havin a movable part; a bolt on said door adapted tobegoperated-by said lever; a socket in the door-casing adapted to beengaged by said bolt; and automatic means upon said door forlocking saidhorizontally-movable part when at the inner end of the" horizontal slotin said guide-plate, whereby said bolt is locked in its retractedposition.

2. In an automatic door-lock, a door; a

horizontal slot for the free end of said horizontall -movab1e art; an=oerating-lever pivotal y supported upon-sai door, having a slot spanningthe free end of said horizonthe socket 12 on the other rod 10 and thehead sure is' exerted uponeitherof the plates 2 2, 'the'rod9 is forcedthrough the length of the f. -slot'7 in the plate 4, tilting the'oerating-levers 6 6, and thereby retracting t 1e bolts 13 doors can swingopen. A rabbet-strip or other suitable device upon one of thedoor's' (reresented by dotted linesin Fig. 1 as at-- the door X from being openedunless theslot spanning the free end of said horizontal yhorizontallymovab le part hinged to the M door; a guide-plate onsaid door, having aon the latch 12, and the bolts are retained in their retracted positionsuntil the rod 9 is retally-movable' part a bolt on said door adapt I edto be operated by said leverta socket in the door-casing ada ted to beengaged by said bolt; anda late pivoted u on the door I and adapted toengage. said movable ori'zontally art when at the inner end=of thehorizonta 'slotin said guide-plate.

; 3.;fIn aniaiitomatic door-look, a pair of swinging, meetindoorsfaplate hinged'to said rod when said doors are closed together; -aguide-plate upon that door that carries the i1 5 each door, each p atebeing adapted to move horizontally to and from its door, and one of saidplates having a projecting rod, and the other a socket adapted tocontain the end of rod, havln 'a horizontal slot for said rod; an

operatingeverupon the same door, adapted oor,

to be engaged by said rod; a bolt on said adapted to be operated by saidlever; and a sooket in the decreasing, adapted to be en= gaged by saidbolt.

4.'In an'automatic door-lock, a pair of swinging, meetin doors; a platehinged to each door, each p atebeing adapted to move horizontally toand'f'rom its door, andone of HUGH ELMER CLARK.

Witnesses:

H. L. OSGOOL. -D. G mme.

